Tobacco pipe



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A. DUNHILL I TOBACCO PIPE Filcl Aug. 25 1921 m lvwenl on 274 #rwi flawUNITED T ES Patented July 31, 1923.

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ALFRED DUllTHiLL, or noiv ioi t-E 1 'IGLA1 I1).J

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Application filed August 25,1921. S erial No.495,256.1

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Be it known that I, ALFRED DUNHILL, a subject of the. King of GreatBritain, residing at London, in the county of London, England, haveinvented certain new and useful Improvements in or Relating to TobaccoPipes, of whichthe following is a specification.

This invention relates to improvements in tobacco pipes and has for itsobject a simple and efilcient construction in which the bowl portion canbe easily cleaned, in which the passage of moisture to the bowl and ofparticles of tobacco or nicotine to the stem or mouthpiece is prevented,and which will be cooler in smoking than with pipes hithertoconstructed.

Accordin to the invention, the bowl portion is provided with a centralbore extending completely through the'same, and a removable base isprovided which forms a false bottom to the bowl and as a receptacle fornicotine and small particles of tobacco. The removable base ispreferably secured. within the lower end of the pipe bowl by means of abayonet joint, the base having projecting pins therein which engage camsurfaces on the interior of the pipe, which, when said base is partiallyrotated. ensure a tight fit of the base in the bottom of the bowl.

Iii-order that the invention may be readily understood, reference ismadeto the accompanying drawings, which show by way of example a pipeconstructed according to the invention.

Fig. 1 is a side elevation showing the bowl portion partly in section.

Fig. 2 is a perspective view of the locking ring for securing theremovable base in position in the bttom of the bowl.

Fig. 3 is a perspective view and Fig. 4 a plan view of the base removedfrom the bowl of the pipe.

Thebowl a of the pipe which may be of any suitable shape is formed inone with the stem b-to which is secured the usual mouthpiece 0. The bowlis formed with a central bore (Z extending completely through the same.At the bottom of the bore is fixedly secured a ring '6 provided on itsinner periphery with diametricallyopposite slots The removable base forthe bowl, which is shown separately in Figs. 3 and 4 comprises a plate ghaving a knurled, milled otherwise. roughened g and I provided with aconcentric cylindricalpon tion k which snuglyjfits intjo the ring"eandforms a close fit in the bore of the bowl. Extending upwardly fromthe bottom of the plate 9 and in the centre of the cylindrical portion his a shank portion z' at the top of which is fixed. or rotatably mounteda slotted or perforated plate or disc 70. This disc constitutes a falsebottom for the base of the bowl and is preferably slightly less indiameter than the bore d.

partlyrotated in the appropriate direction, V the cam surfaces cause theupper outer surface of the bottom plate g to be drawn up tightly intoengagement with the under surface of the ring 6 thereby securing thesame firmly in position.

The, diameter of the inner periphery of the ring 6 is preferably equalto or slightly greater than the diameter of the bore of p the bowl sothat when the removable base is removed a clear unobstructed passage isobtained which facilitates cleaning of the bowl.

The smoke passage b of the stem is 10 cated at a point slightly belowthe perforated plate 70 so that the tobacco is supported above saidpassage.

, By the construction above described the cylindrical portion h of theremovable base constitutes. a chamber or receptacle into which nicotineand small particles of tobacco dust fall from the bowl, thus'preventingthe passage thereoftothe mouth of the smoker.

The apertured plate k being'located above the smoke passage 1) of thestem prevents moisture from the smokers'. miouth from passing into thebowl. I r

The removable base, the ring and the apertured disc 70 are preferablymade of aluminium or other suitable light weight material, which can beeasily cleaned by washmg. 1 The cylindrical portion k may be made ed'tofit into saidi ing, said fitting comprisofsufiicient length tocompletely close the cut away groo-ye above the-ming e so as topreven-titobacobeconiing lodgedv'therei na I claim:

A tobacco pipe comprising va bowl portion having a bore extending"completely there through a stem joined With said bowl hav ing a smokepassage communicating with said bowl, a ring fixed; in. the: lower "end;of 7 said bore having slots in the inner periphery of said ringrwith camsurfaces on th e upper edge of said ring, a removable fitting: adapt- .7faces of the rin scribed. a

In testimony, Whereof, I have hereuntoing a base plate having an outerCylindrical ;bei-ng located in a plane above the smoke passage in thestem, substantially as desubscribed my name.

ALFRED DUNVHILLJ' r

